Firefly Blade: Credit Card Knife for Your Wallet
Firefly Blade: The Credit Card Knife with Built-In Firestarter
The Firefly Blade is a true credit card knife designed to live in your wallet while still delivering real cutting and fire-starting capability. Made from high carbon steel and sized exactly like a credit card, this wallet knife combines a sharp usable blade with an integrated ferrocerium rod, giving you both cutting and ignition in a flat, everyday carry format.
This credit card knife is built for people who want real function without bulk. It fits in a wallet, pocket organizer, or compact survival kit and stays with you when full-size knives cannot. Whether you are building a minimalist EDC setup, an urban survival kit, or a discreet backup blade, the Firefly Blade turns unused wallet space into practical capability.
Why the Firefly Credit Card Knife Exists
The Firefly Blade Credit Card Knife was built for people who want a real knife that is always with them, not left at home or buried in a pack. Most knives are too big or too heavy for everyday carry, but your wallet is always with you. That is why we created a true knife for wallet carry that stays flat and ready without adding bulk.
This credit card knife was designed to be thin enough to carry every day, but strong enough to cut, scrape, and strike when it matters. By using high carbon steel and integrating a ferro rod directly into the tool, the Firefly Blade provides two critical survival functions in a format that people will actually carry.
When you cannot carry a full size blade, the Firefly gives you dependable cutting power in a slim wallet knife card design. It handles everyday jobs like trimming rope, opening packages, and cutting cord, but it is also strong enough for carving kindling or prepping fire materials. It is the sharp edge that is always there when you need it and invisible when you do not.
The hidden ferro rod brings even more capability to your kit. Your wallet knife does more than cut. It can help you start a fire in the field, giving you two of the most important survival tools in one compact piece of gear.
At Grim Workshop, we believe in putting a backpack’s worth of tools in your wallet. The Firefly Blade was built around that idea. It is compact, reusable, and designed for real life, not just for show.
Firefly Card Blade: Built for Real Life
The Firefly Blade credit card knife is made from high carbon steel, giving it strength, edge retention, and durability that stamped novelty tools cannot match. The blade is designed to be usable, not decorative, and the integrated ferro rod allows for fire starting without carrying a separate striker.
Despite its strength, the Firefly Blade remains credit card size, allowing it to fit in standard wallets, compact EDC organizers, and small tins. It is built to be carried daily, not left behind due to bulk or weight.
The Firefly Blade Credit Card Knife isn’t just a backup, it’s a working tool made to perform. Each blade is Made in the USA, field-tested, and designed for repeated use. The blued steel finish prevents rust, while the reusable flat design makes it easy to carry anywhere.
Whether you’re lighting a fire, cutting paracord, or slicing food at camp, the Firefly Blade is compact enough for your wallet yet capable enough to rely on when it matters most.
This is a wallet knife meant to be used carefully and intentionally, not a replacement for a full-size knife, but a dependable backup that stays with you.
Firefly Blade Tool List, Skills, and Training
Like all Grim Workshop tools, the Firefly Blade credit card knife is designed to reward skill, not replace it. Using a compact blade and ferro rod safely and effectively requires basic cutting awareness and fire-starting technique.
Grim Workshop provides skill guides for every tool we make, including small tools like wallet knives. These guides explain what the tool is, how to use it properly, and how to improvise alternatives when needed. This ensures that even compact tools are backed by real knowledge, not guesswork.
How This Credit Card Knife Fits Into a Kit
The Firefly Blade credit card knife fits naturally into multiple kit types:
Wallet EDC:
Carried as a discreet wallet knife when full-size blades are not an option.
Urban survival kits:
Provides cutting and fire capability in compact emergency kits for city environments.
Minimalist survival kits:
Adds redundancy without sacrificing space, making it ideal for slim tins and flat kits.
Travel and backup kits:
Functions as a lightweight emergency blade and ignition source when gear options are limited.
This credit card knife pairs well with compact fire tinder, cordage, and other flat survival tools where space efficiency matters.
Firefly Product Details
Firefly Wallet Knife Card: Built To Last
Every Grim card tool is made from long lasting materials and produced in small batches so quality always comes first. The Firefly is no different. This wallet knife is made from 1095 high carbon steel, a tough spring steel that can last a lifetime with simple care. High carbon steel is extremely strong, but it is also sensitive to moisture, so a light coat of oil now and then keeps your wallet knife card ready for years of use. Upon arrival give it a light coat of oil and it's ready to go!
The Firefly is backed by the Grim Guarantee, so if your knife for wallet carry ever fails during normal use, we refund, replace, or exchange it. Designed in Texas and made in the USA, this tool is built to outlast the problem. When you depend on your gear, reliability is not optional.
Firefly Blade FAQ
Complete Your Fire Kit
Round out your fire setup with our Fire Starting Survival Cards or Specialized Tinder options for a spark, flame, and tinder system that lives in your pocket.
Cant Find What your Looking For?
→ Fire Category Index of Tools, Skills, and More
→ Explore all Fire Starting Tools and Gear
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WHY CHOOSE GRIM WORKSHOP'S SURVIVAL TOOLS?
INNOVATIVE DESIGN
We focus on creating multi-functional tools that maximize utility while minimizing space.
Expert Craftsmanship
Our tools are made in the USA with the highest standards of quality and durability.
made in the usa
Crafted in the USA, our products deliver premium durability and American craftsmanship.
Field-Tested Reliability
Our tools are trusted by outdoor enthusiasts, survivalists, and bushcrafters around the world.
ABOUT GRIM WORKSHOP
Grim Workshop is dedicated to creating innovative, durable, and compact everyday carry (EDC) and survival tools that you can rely on in any situation. With nearly a decade of experience, we pride ourselves on crafting tools that combine practicality with ingenuity, ensuring they meet the highest standards of quality and durability. Made in the USA, our products are designed to be both effective and convenient, fitting seamlessly into your daily life or survival kit. Whether you're a seasoned outdoor enthusiast or someone who values preparedness, Grim Workshop provides the tools you need to stay ready for anything.
family owned and operated
Firefly Blade: Credit Card Knife for Your Wallet is proudly crafted in the USA, ensuring that every piece meets the highest standards of quality and durability. Made with precision and care, this card embodies the best of American craftsmanship, providing you with a reliable and robust survival tool that you can trust in the most demanding situations. When you choose this card, you're not just getting a tool—you're getting a piece of equipment built to last.
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Firefly Blade: Credit Card Knife for Your Wallet
$23.95